2010 United States state legislative elections

For related races, see 2010 United States elections.

2010 United States state legislative elections

←  2009 November 2, 2010 2011  →
88 legislative chambers in 46 states
Majority party Minority party Third party   Party Republican Democratic Coalition Chambers before 37 61 1 [a] Chambers after 57 40 1 [a] Overall change 20 21 [b]
Map of upper house elections:      Democrats retained control      Republicans gained control     Republicans retained control      Coalition retained control      Non-partisan legislature      No regularly-scheduled elections
Map of lower house elections:      Democrats retained control      Republicans gained control     Republicans retained control      Split body formed      Non-partisan legislature      No regularly-scheduled elections

The 2010 United States state legislative elections were held on November 2, 2010, halfway through President Barack Obama's first term in office. Elections were held for 88 legislative chambers, with all states but Louisiana, Mississippi, New Jersey, and Virginia holding elections in at least one house. Kansas and New Mexico held elections for their lower, but not upper houses. Four territorial chambers in three territories and the District of Columbia were up as well. The winners of this election cycle served in their respective legislatures for either two or four-year terms, depending on state election rules.

Owing to the slow recovery from the Great Recession, the unpopularity of Democratic president Barack Obama, and the highly-publicized and chaotic passage of the Affordable Care Act, Republicans scored record gains. They net a total of 680 seats and took control of 20 legislative chambers, while the Democrats lost 21 chambers.

The Republican victories gave the party unprecedented power over the redrawing of congressional and state legislative districts following the 2010 census. They also used their newfound majorities to pass conservative legislation in a number of states, weakening labor unions, restricting abortion access, cutting taxes, and reducing government regulation.

Summary table

Regularly-scheduled elections were held in 88 of the 99 state legislative chambers in the United States; nationwide, regularly-scheduled elections were held for 6,064 of the 7,383 legislative seats. Most legislative chambers held elections for all seats, but some legislative chambers that use staggered elections held elections for only a portion of the total seats in the chamber. ^[1] The chambers that were not up for election either hold regularly-scheduled elections in odd-numbered years, or have four-year terms and hold all regularly-scheduled elections in presidential election years.

Note that this table only covers regularly-scheduled elections; additional special elections took place concurrently with these regularly-scheduled elections.

State	Upper House [1]				Lower House [1]
	Seats up	Total	% up	Term	Seats up	Total	% up	Term
Alabama	35	35	100	4	105	105	100	4
Alaska	10	20	50	4	40	40	100	2
Arizona	30	30	100	2	60	60	100	2
Arkansas	18	35	51	2/4 [c]	100	100	100	2
California	20	40	50	4	80	80	100	2
Colorado	17	35	49	4	65	65	100	2
Connecticut	36	36	100	2	151	151	100	2
Delaware	10	21	48	2/4 [c]	41	41	100	2
Florida	20	40	50	2/4 [c]	120	120	100	2
Georgia	56	56	100	2	180	180	100	2
Hawaii	12	25	48	2/4 [c]	51	51	100	2
Idaho	35	35	100	2	70	70	100	2
Illinois	39	59	66	2/4 [c]	118	118	100	2
Indiana	25	50	50	4	100	100	100	2
Iowa	25	50	50	4	100	100	100	2
Kansas	0	40	0	4	125	125	100	2
Kentucky	19	38	50	4	100	100	100	2
Louisiana	0	39	0	4	0	105	0	4
Maine	35	35	100	2	151	151	100	2
Maryland	47	47	100	4	141	141	100	4
Massachusetts	40	40	100	2	160	160	100	2
Michigan	38	38	100	4	110	110	100	2
Minnesota	67	67	100	2/4 [c]	134	134	100	2
Mississippi	0	52	0	4	0	122	0	4
Missouri	17	34	50	4	163	163	100	2
Montana	25	50	50	4	100	100	100	2
Nebraska	24 [d]	49 [d]	49 [d]	4	N/A (unicameral)
Nevada	11	21	52	4	42	42	100	2
New Hampshire	24	24	100	2	400	400	100	2
New Jersey	0	40	0	2/4 [c]	0	80	0	2
New Mexico	0	42	100	4	70	70	100	2
New York	62	62	100	2	150	150	100	2
North Carolina	50	50	100	2	120	120	100	2
North Dakota	24	47	51	4	47	94	50	4
Ohio	16	33	52	4	99	99	100	2
Oklahoma	24	48	50	4	101	101	100	2
Oregon	15	30	50	4	60	60	100	2
Pennsylvania	25	50	50	4	203	203	100	2
Rhode Island	38	38	100	2	75	75	100	2
South Carolina	0	46	0	4	124	124	100	2
South Dakota	35	35	100	2	70	70	100	2
Tennessee	17	33	52	4	99	99	100	2
Texas	15	31	48	2/4 [c]	150	150	100	2
Utah	14	29	48	4	75	75	100	2
Vermont	30	30	100	2	150	150	100	2
Virginia	0	40	0	4	0	100	0	2
Washington	25	49	49	4	98	98	100	2
West Virginia	17	34	50	4	100	100	100	2
Wisconsin	17	33	52	4	99	99	100	2
Wyoming	15	30	50	4	60	60	100	2
Total	1105	1971	56	N/A	4958	5411	92	N/A

Electoral predictions

Analysts predicted a very strong showing for the Republicans, anticipating a nationwide wave election in their favor. This was attributed to the nation's slow recovery from the Great Recession, the chaotic passage and implementation of the Affordable Care Act, immigration, and the large number of legislative chambers and governorships that Democrats controlled after the 2006 and 2008 elections. ^[2] As the campaign progressed, Democratic prospects only became worse, leading to the largest gap in legislative chambers held by each party considered vulnerable in over a decade. ^[3] By election day, Republicans were expected to be able to flip between eleven and twenty seven legislative chambers from Democrats, with only one Republican-held chamber considered vulnerable. ^[4]

Ratings are designated as follows:

• "Tossup": Competitive, no advantage
• "Lean": Competitive, slight advantage
• "Likely": Not competitive, but opposition could make significant gains
• "Safe": Not competitive at all

State	Chamber	Last election	Governing Nov. 1, 2010 [4]	Result
Alabama	Senate	D 23–12	Lean R (flip)	R 22–12–1
	House of Representatives	D 62–43	Lean R (flip)	R 62–43
Alaska	Senate	Coal. 16–4	Tossup	Coal. 15–5
	House of Representatives	R 22–18	Lean R	R 24–16
Arizona	Senate	R 18–12	Safe R	R 21–9
	House of Representatives	R 36–24	Safe R	R 40–20
Arkansas	Senate	D 27–8	Safe D	D 20–15
	House of Representatives	D 71–28–1	Safe D	D 55–45
California	State Senate	D 25–15	Safe D	D 25–15
	State Assembly	D 50–29–1	Safe D	D 52–28
Colorado	Senate	D 21–14	Lean D	D 20–15
	House of Representatives	D 38–27	Tossup	R 33–32
Connecticut	State Senate	D 24–12	Safe D	D 23–13
	House of Representatives	D 114–37	Safe D	D 99–52
Delaware	Senate	D 16–5	Safe D	D 14–7
	House of Representatives	D 24–17	Lean D	D 26–15
Florida	Senate	R 26–14	Safe R	R 28–12
	House of Representatives	R 76–44	Safe R	R 81–39
Georgia	State Senate	R 34–22	Safe R	R 35–21
	House of Representatives	R 105–74–1	Safe R	R 108–71–1
Hawaii	Senate	D 23–2	Safe D	D 24–1
	House of Representatives	D 45–6	Safe D	D 43–8
Idaho	Senate	R 28–7	Safe R	R 28–7
	House of Representatives	R 52–18	Safe R	R 57–13
Illinois	Senate	D 37–22	Likely D	D 34–25
	House of Representatives	D 70–48	Lean D	D 64–54
Indiana	Senate	R 33–17	Safe R	R 36–14
	House of Representatives	D 52–48	Lean R (flip)	R 60–40
Iowa	Senate	D 32–18	Lean D	D 26–24
	House of Representatives	D 57–43	Tossup	R 60–40
Kansas	House of Representatives	R 77–48	Safe R	R 92–33
Kentucky	Senate	R 21–16–1	Likely R	R 22–15–1
	House of Representatives	D 65–35	Likely D	D 58–42
Maine	Senate	D 20–15	Tossup	R 20–14–1
	House of Representatives	D 95–55–1	Likely D	R 78–72–1
Maryland	Senate	D 33–14	Safe D	D 35–12
	House of Delegates	D 104–37	Safe D	D 98–43
Massachusetts	Senate	D 35–5	Safe D	D 36–4
	House of Representatives	D 144–15–1	Safe D	D 130–30
Michigan	Senate	R 21–17	Likely R	R 26–12
	House of Representatives	D 67–43	Tossup	R 63–47
Minnesota	Senate	D 44–23	Likely D	R 37–30
	House of Representatives	D 87–47	Lean D	R 72–62
Missouri	Senate	R 23–11	Safe R	R 26–8
	House of Representatives	R 89–74	Safe R	R 105–58
Montana	Senate	R 27–23	Likely R	R 28–22
	House of Representatives	D 50–50	Lean R (flip)	R 68–32
Nevada	Senate	D 12–9	Lean D	D 11–10
	Assembly	D 28–14	Likely D	D 26–16
New Hampshire	Senate	D 14–10	Lean R (flip)	R 19–5
	House of Representatives	D 225–175	Lean R (flip)	R 298–102
New Mexico	House of Representatives	D 45–25	Likely D	D 36–34
New York	State Senate	D 32–30	Tossup	R 32–30
	State Assembly	D 107–41–1–1	Safe D	D 99–50–1
North Carolina	Senate	D 30–20	Tossup	R 31–19
	House of Representatives	D 68–52	Tossup	R 67–52–1
North Dakota	Senate	R 26–21	Safe R	R 35–12
	House of Representatives	R 58–36	Safe R	R 69–25
Ohio	Senate	R 21–12	Safe R	R 23–10
	House of Representatives	D 53–46	Lean R (flip)	R 59–40
Oklahoma	Senate	R 26–22	Safe R	R 32–16
	House of Representatives	R 61–40	Safe R	R 70–31
Oregon	State Senate	D 18–12	Lean D	D 16–14
	House of Representatives	D 36–24	Likely D	30–30
Pennsylvania	State Senate	R 30–20	Safe R	R 30–20
	House of Representatives	D 104–99	Lean R (flip)	R 112–91
Rhode Island	Senate	D 33–4–1	Safe D	D 29–8–1
	House of Representatives	D 69–6	Safe D	D 65–10
South Carolina	House of Representatives	R 73–51	Safe R	R 76–48
South Dakota	Senate	R 21–14	Safe R	R 30–5
	House of Representatives	R 46–24	Safe R	R 50–19–1
Tennessee	Senate	R 19–14	Likely R	R 20–13
	House of Representatives	R 50–49	Likely R	R 64–34–1
Texas	Senate	R 19–12	Safe R	R 19–12
	House of Representatives	R 76–74	Likely R	R 99–51
Utah	State Senate	R 21–8	Safe R	R 22–7
	House of Representatives	R 53–22	Safe R	R 58–17
Vermont	Senate	D 23–7	Safe D	D 21–8–1
	House of Representatives	D 94–48–5–3	Safe D	D 94–48–5–3
Washington	State Senate	D 31–18	Lean D	D 27–22
	House of Representatives	D 62–36	Lean D	D 56–42
West Virginia	Senate	D 26–8	Safe D	D 28–6
	House of Delegates	D 71–29	Safe D	D 65–35
Wisconsin	Senate	D 18–15	Lean R (flip)	R 19–14
	State Assembly	D 52–46–1	Lean R (flip)	R 60–38–1
Wyoming	Senate	R 23–7	Safe R	R 26–4
	House of Representatives	R 41–19	Safe R	R 50–10

National results

Lower house results by party [5] Party Seats before [e] Chambers before Seats after +/- Chambers after +/- Republican 2361 16 2908 547 29 13 Democratic 3029 33 2484 545 19 14 Independent 14 0 13 1 0 Progressive 5 0 5 0 Independence 1 0 1 0 Working Families 1 0 0 1 0 Total 5411 49 5411 — 49 —

Upper house results by party [f] [5] Party Seats before [g] Chambers before Seats after +/- Chambers after +/- Republican 925 21 1057 132 28 7 Democratic 1043 28 909 134 21 7 Independent 3 0 4 1 0 Progressive 0 0 1 1 0 Total 1971 50 1971 — 50 —

Republicans made substantial gains in state legislatures across the nation. Twenty chambers flipped from Democratic to Republican control, giving Republicans full control of eleven state legislatures and control of one chamber in Colorado, Iowa, and New York. ^{[6] [7]} Additionally, Republicans gained enough seats in the Oregon House of Representatives to produce a 30-30 party split, pushing Democrats into a power-sharing agreement that resulted in the election of two "co-speakers" (one from each party) to lead the chamber. ^[8] Republicans gained a net of 680 seats in state legislative races, breaking the previous record of 628 flipped seats set by Democrats in the post-Watergate elections of 1974. ^[9]

Six states saw both chambers switch from Democrat to Republican majorities: Alabama (where the Republicans won a majority and a trifecta for the first time since 1874), Maine (for the first time since 1964), Minnesota (for the first time since 1915 in partisan elections and 1973 in non-partisan elections), New Hampshire, North Carolina (for the first time since 1896), and Wisconsin. In addition, by picking up the lower chambers in Indiana, Ohio, Michigan, Montana ^[h] and Pennsylvania, Republicans gained control of both chambers in an additional five states. Further, Republicans picked up one chamber from Democrats in Colorado, Iowa, and New York to split control in those states. They expanded majorities in both chambers in Texas, Florida, and Georgia. ^{[10] [11]}

Impact

The massive Republican gains made in 2010 immensely strengthened their position on the national stage. This had both short-term effects, such as their ability to counter the policies of president Barack Obama, as well as long term consequences due to the impending redistricting cycle. In the short term, these elections heralded in a conservative shift in state legislatures across the country, especially in the states where Republicans gained complete control. This led to a tightening of policies surrounding abortion, a loosening of tax policy, and the curtailing of the power of labor unions. Many of these states refused to accept the Medicaid expansion offered by the Affordable Care Act meant to close the Medicaid coverage gap. ^[12]

Labor unions

Three states where Republicans gained complete control of state government in 2010, Indiana, Michigan, and Wisconsin, would establish right-to-work laws during the following decade. ^[13] States passed a number of other wide-ranging bills to weaken public-sector unions, most notoriously in Wisconsin with the passage of Act 10, which led to massive protests and recall elections in 2011. ^{[14] [15]} Efforts to pass a similar bill in Ohio failed after a veto referendum overwhelmingly rejected it in 2011. ^[16]

Partisan control of congressional redistricting after the 2010 elections, with the number of U.S. House seats each state will receive.

  Democratic control

  Republican control

  Split or bipartisan control

  Independent redistricting commission

  No redistricting necessary

Redistricting

See also: 2010 United States redistricting cycle

Republicans' massive state legislative gains timed perfectly with the release of the results of the 2010 census, giving the party unprecedented control over congressional and legislative district maps until after the 2020 elections. ^{[17] [18] [19]} Republicans, knowing this ahead of time, deliberately targeted vulnerable Democratic incumbents and Democratic-held legislative chambers in order to maximize their power in the upcoming redistricting cycle. ^[20] As a result, Republicans fully controlled the redistricting of 210 congressional districts across 18 states, minimizing Democratic control to a mere 44 congressional districts across 6 states. ^[21] The impact of this was most immediately felt during the 2012 elections, where Barack Obama won the presidential election and Democratic U.S. House candidates won a plurality of the nationwide popular vote, but Republicans maintained control of the chamber. ^[22]

Legacy

The 2010 midterms ushered in an era of Republican dominance of statewide politics fueled by a Democratic collapse in white, rural, and southern regions of the country.

Democrats lost significant ground in majority-White, rural areas across the former Confederacy in the 2010 and 2011 elections due to both electoral losses and party switching. Democrats lost more and more ground throughout the 2010s and gained have virtually none of it back since.

  Republican hold (651)

  Republican gain through election (127)

  Representative switched to the Republican Party (32)

  Democratic hold (502)

  Democratic gain through election (9)

  Independent hold (4)

  Independent gain through election (1)

Southern, rural Democratic fall

Democrats had been slowly losing ground in the rural South for the past several decades leading up to the 2010 elections. Democrats lost nearly every southern legislative chamber up for election in 2010, with White, rural incumbents primarily falling victim. Republicans successfully tied the conservative Democrats in these seats to the more liberal national party, eroding their local support and tying them to policies unpopular in their districts. A number of incumbents who survived would later switch to the Republican party, with many doing so before or immediately after the election. This left most Southern Democratic caucuses primarily made up of African American and Hispanic legislators, often based in urban areas, with a nearly extinct White, rural caucus, and a weakened but slowly growing suburban caucus. ^[23] By 2014, Republicans controlled every governorship, U.S. Senate seat, and legislative chamber in the former Confederacy. ^[24]

The 2010 elections sparked a sharp decline in Democratic support in rural areas across the country, even outside the South. Throughout the decade, this led to a strengthening correlation between population density and political party support. ^[25] At the same time, increased political polarization made it more challenging for conservative Democrats to win in areas which voted for Republicans in presidential elections, culminating in Republicans flipping the Kentucky House of Representatives in 2016, the final Democratic-controlled legislative chamber in a deeply Republican state. ^[26]

Midwest

Bolstered by heavily gerrymandered legislative maps, the 2010s saw a sharply-conservative turn in Midwestern state policy. By the end of the decade, five Midwestern states had adopted right-to-work laws, with a sixth, Missouri, rejecting one in a 2018 veto referendum. ^{[13] [27]} These policies remained in place even as Democrats made gains in statewide elections in these states, winning the governorships in Wisconsin, Michigan, and Pennsylvania in 2018. Democrats won the aggregate popular vote in the lower house elections in all three of these states, but they did not win control of any of them due to gerrymandering. ^[28] Democrats would only begin to be able to reverse these policies after the implementation of new legislative maps in the 2020s. ^[29] In other states, such as Ohio, Democrats have been unable to regain power in any meaningful form since their 2010 losses. ^[30]

Donald Trump

The Tea Party movement's success in the 2010 election predicated the rise of Donald Trump as the dominant force in the Republican Party. Tea Party candidates ran on anti-establishment credentials, favoring low taxes, minimal government intervention, and fierce social conservatism. These became defining features of Trump's 2016 presidential campaign, the rise of the Make American Great Again movement, and Trumpism. ^[31] Many of the regions outside the South where Republicans made the largest gains in 2010 swung sharply towards Donald Trump in the 2016 election despite having voted for Barack Obama again in the 2012 election. ^{[32] [33]}

Maps

• 
  Partisan control of state governments following the 2010 elections

    Democrats gained control

    Democrats retained control

    Split government formed

    Split government maintained

    Republicans gained control

    Republicans retained control
• 
  Upper house seats by party holding majority in each state
  

  Republican   50–60%   60–70%   70–80%   80–90%

  Democratic   50–60%   60–70%   70–80%   80–90%   90–100%

  Tie   50%

• 
  Lower house seats by party holding majority in each state
  

  Republican   50–60%   60–70%   70–80%   80–90%

  Democratic   50–60%   60–70%   80–90%

  Tie   50%

• 
  Net changes to upper house seats after the 2010 elections
       +1 Rep seat     +2 Rep seats     +3–5 Rep seats     +6–16 Rep seats
       +1 Dem seat     +2 Dem seats
       +1 Prog seat
• 
  Net changes to lower house seats after the 2010 elections
       +2 Rep seats     +3–5 Rep seats     +6–122 Rep seats
       +2 Dem seats

State summaries

Alabama

Main articles: 2010 Alabama Senate election and 2010 Alabama House of Representatives election

All of the seats of the Alabama Legislature were up for election. Republicans flipped control of both state legislative chambers, winning them for the first time since 1874. ^[34] After the election, an additional four Democratic state representatives switched parties, giving Republicans a supermajority in the chamber. ^[35]

Alabama Senate

Party		Before	After	Change
	Republican	14	22	8
	Independent	1	1
	Democratic	20	12	8
Total		35	35

Alabama House of Representatives

Party		Before	After	Change
	Republican	45	62	17
	Democratic	60	43	17
Total		105	105

Alaska

Main articles: 2010 Alaska Senate election and 2010 Alaska House of Representatives election

All of the seats of the Alaska House of Representatives and half of the Alaska Senate were up for election. The Democratic-led coalition maintained control of the Senate while Republicans maintained control of the House.

Alaska Senate

Party		Before	After	Change
	Democratic	10	10
	Republican	6	5
		4	5
Total		20	20

Alaska House of Representatives

Party		Before	After	Change
	Republican	22	24	2
	Democratic	18	4	2
			12
Total		40	40

Arizona

Main articles: 2010 Arizona Senate election and 2010 Arizona House of Representatives election

All of the seats of the Arizona Legislature were up for election. Republicans maintained control of both state legislative chambers.

Arizona Senate

Party		Before	After	Change
	Republican	18	21	3
	Democratic	12	9	3
Total		30	30

Arizona House of Representatives

Party		Before	After	Change
	Republican	36	40	4
	Democratic	24	20	4
Total		60	60

Arkansas

Main articles: 2010 Arkansas State Senate election and 2010 Arkansas House of Representatives election

All of the seats of the Arkansas House of Representatives and half of the Arkansas Senate were up for election. Democrats maintained control of both state legislative chambers but with substantially reduced majorities.

Arkansas Senate

Party		Before	After	Change
	Democratic	27	20	7
	Republican	8	15	7
Total		35	35

Arkansas House of Representatives

Party		Before	After	Change
	Democratic	72	55	17
	Republican	28	45	17
Total		100	100

California

Main articles: 2010 California State Senate election and 2010 California State Assembly election

All of the seats of the California House of Representatives and half of the California Senate were up for election. Democrats maintained control of both state legislative chambers.

California State Senate

Party		Before	After	Change
	Democratic	25	25
	Republican	15	15
Total		40	40

California State Assembly

Party		Before	After	Change
	Democratic	50	52	2
	Republican	29	28	1
	Independent	1	0	1
Total		80	80

Colorado

Main articles: 2010 Colorado Senate election and 2010 Colorado House of Representatives election

All of the seats of the Colorado House of Representatives and half of the Colorado Senate were up for election. Republicans won control of the House while Democrats maintained control of the Senate.

Colorado Senate

Party		Before	After	Change
	Democratic	21	20	1
	Republican	14	15	1
Total		35	35

Colorado House of Representatives

Party		Before	After	Change
	Republican	27	33	6
	Democratic	38	32	6
Total		65	65

Connecticut

Main articles: 2010 Connecticut State Senate election and 2010 Connecticut House of Representatives election

All of the seats of the Connecticut Legislature were up for election. Democrats maintained control of both state legislative chambers.

Connecticut State Senate

Party		Before	After	Change
	Democratic	24	23	1
	Republican	12	13	1
Total		36	36

Connecticut House of Representatives

Party		Before	After	Change
	Democratic	114	99	15
	Republican	37	52	15
Total		151	151

Delaware

Main articles: 2010 Delaware Senate election and 2010 Delaware House of Representatives election

All of the seats of the Delaware House of Representatives and half of the Delaware Senate were up for election. Democrats maintained control of both state legislative chambers.

Delaware Senate

Party		Before	After	Change
	Democratic	15	14	1
	Republican	6	7	1
Total		21	21

Delaware House of Representatives

Party		Before	After	Change
	Democratic	24	26	2
	Republican	17	15	2
Total		41	41

Florida

Main articles: 2010 Florida Senate election and 2010 Florida House of Representatives election

All of the seats of the Florida House of Representatives and half of the Florida Senate were up for election. Republicans maintained control of both state legislative chambers.

Florida Senate

Party		Before	After	Change
	Republican	26	28	2
	Democratic	14	12	2
Total		40	40

Florida House of Representatives

Party		Before	After	Change
	Republican	76	81	5
	Democratic	44	39	5
Total		120	120

Georgia

Main articles: 2010 Georgia State Senate election and 2010 Georgia House of Representatives election

All of the seats of the Georgia Legislature were up for election. Republicans maintained control of both state legislative chambers.

Georgia State Senate

Party		Before	After	Change
	Republican	34	35	1
	Democratic	22	21	1
Total		56	56

Georgia House of Representatives

Party		Before	After	Change
	Republican	105	108	3
	Democratic	74	71	3
	Independent	1	1
Total		180	180

Hawaii

Main articles: 2010 Hawaii Senate election and 2010 Hawaii House of Representatives election

All of the seats of the Hawaii House of Representatives and half of the Hawaii Senate were up for election. Democrats maintained control of both state legislative chambers.

Hawaii Senate

Party		Before	After	Change
	Democratic	23	24	1
	Republican	2	1	1
Total		25	25

Hawaii House of Representatives

Party		Before	After	Change
	Democratic	45	43	2
	Republican	6	8	2
Total		51	51

Idaho

Main articles: 2010 Idaho Senate election and 2010 Idaho House of Representatives election

All of the seats of the Idaho Legislature were up for election. Republicans maintained control of both state legislative chambers.

Idaho Senate

Party		Before	After	Change
	Republican	28	28
	Democratic	7	7
Total		35	35

Idaho House of Representatives

Party		Before	After	Change
	Republican	52	57	5
	Democratic	18	13	5
Total		70	70

Illinois

Main articles: 2010 Illinois Senate election and 2010 Illinois House of Representatives election

All of the seats of the Illinois House of Representatives and 1/3rd of the Illinois Senate were up for election. Democrats maintained control of both state legislative chambers.

Illinois Senate

Party		Before	After	Change
	Democratic	37	34	3
	Republican	22	25	3
Total		59	59

Illinois House of Representatives

Party		Before	After	Change
	Democratic	70	64	6
	Republican	48	54	6
Total		118	118

Indiana

Main articles: 2010 Indiana State Senate election and 2010 Indiana House of Representatives election

All of the seats of the Indiana House of Representatives and half of the Indiana Senate were up for election. Republicans expanded their majority in the Senate and flipped control of the House of Representatives, winning their largest legislative gains in over 25 years. ^[10]

Indiana Senate

Party		Before	After	Change
	Republican	33	36	3
	Democratic	17	14	3
Total		50	50

Indiana House of Representatives

Party		Before	After	Change
	Republican	48	60	12
	Democratic	52	40	12
Total		100	100

Iowa

Main articles: 2010 Iowa Senate election and 2010 Iowa House of Representatives election

All of the seats of the Iowa House of Representatives and half of the Iowa Senate were up for election. Republicans won control of the House of Representatives and Democrats maintained control of the Senate.

Iowa Senate

Party		Before	After	Change
	Democratic	32	26	6
	Republican	18	24	6
Total		50	50

Iowa House of Representatives

Party		Before	After	Change
	Republican	43	60	17
	Democratic	57	40	17
Total		100	100

Kansas

Main article: 2010 Kansas House of Representatives election

All of the seats of the Kansas House of Representatives. Republicans maintained control of both state legislative chambers.

Kansas House of Representatives

Party		Before	After	Change
	Republican	77	92	15
	Democratic	48	33	15
Total		125	125

Kentucky

Main articles: 2010 Kentucky Senate election and 2010 Kentucky House of Representatives election

All of the seats of the Kentucky House of Representatives and half of the Kentucky Senate were up for election. Republicans maintained control of the Senate and Democrats maintained control of the House of Representatives.

Kentucky Senate

Party		Before	After	Change
	Republican	20	22	2
	Independent	1	1
	Democratic	17	15	2
Total		38	38

Kentucky House of Representatives

Party		Before	After	Change
	Democratic	65	58	7
	Republican	35	42	7
Total		100	100

Maine

Main articles: 2010 Maine State Senate election and 2010 Maine House of Representatives election

All of the seats of the Maine Legislature were up for election. Republicans won control of both legislative chambers.

Maine Senate

Party		Before	After	Change
	Republican	15	20	5
	Democratic	20	14	6
	Independent	0	1	1
Total		35	35

Maine House of Representatives

Party		Before	After	Change
	Republican	55	78	23
	Democratic	95	72	23
	Independent	1	1
Total		151	151

Maryland

Main articles: 2010 Maryland Senate election and 2010 Maryland House of Delegates election

All of the seats of the Maryland Legislature were up for election. Democrats maintained control of both state legislative chambers.

Maryland Senate

Party		Before	After	Change
	Democratic	33	35	2
	Republican	14	12	2
Total		47	47

Maryland House of Delegates

Party		Before	After	Change
	Democratic	104	98	6
	Republican	37	43	6
Total		141	141

Massachusetts

Main articles: 2010 Massachusetts Senate election and 2010 Massachusetts House of Representatives election

All of the seats of the Massachusetts Legislature were up for election. Democrats maintained control of both state legislative chambers.

Massachusetts Senate

Party		Before	After	Change
	Democratic	35	36	1
	Republican	5	4	1
Total		40	40

Massachusetts House of Representatives

Party		Before	After	Change
	Democratic	144	130	14
	Republican	15	30	15
	Independent	1	0	1
Total		160	160

Michigan

Main articles: 2010 Michigan Senate election and 2010 Michigan House of Representatives election

All of the seats of the Michigan Legislature were up for election. Republicans made large gains in both chambers, flipping control of the House and expanding their majority in the Senate. ^[10]

Michigan Senate

Party		Before	After	Change
	Republican	22	26	4
	Democratic	16	12	4
Total		38	38

Michigan House of Representatives

Party		Before	After	Change
	Republican	43	63	20
	Democratic	67	47	20
Total		110	110

Minnesota

Main articles: 2010 Minnesota Senate election and 2010 Minnesota House of Representatives election

All of the seats of the Minnesota Legislature were up. Republicans won control of both chambers.

Minnesota Senate

Party		Before	After	Change
	Republican	21	37	16
	Democratic (DFL)	46	30	16
Total		67	67

Minnesota House of Representatives

Party		Before	After	Change
	Republican	47	72	25
	Democratic (DFL)	87	62	25
Total		134	134

Missouri

Main articles: 2010 Missouri State Senate election and 2010 Missouri House of Representatives election

All of the seats of the Missouri House of Representatives and half of the Missouri Senate were up for election. Republicans maintained control of both state legislative chambers.

Missouri Senate

Party		Before	After	Change
	Republican	23	26	3
	Democratic	11	8	3
Total		34	34

Missouri House of Representatives

Party		Before	After	Change
	Republican	89	105	16
	Democratic	74	58	16
Total		163	163

Montana

Main articles: 2010 Montana Senate election and 2010 Montana House of Representatives election

All of the seats of the Montana House of Representatives and half of the Montana Senate were up for election. Republicans won control of the House and maintained control of the Senate.

Montana Senate

Party		Before	After	Change
	Republican	27	28	1
	Democratic	23	22	1
Total		50	50

Montana House of Representatives

Party		Before	After	Change
	Republican	50	68	18
	Democratic	50 [i]	32	18
Total		100	100

Nebraska

Main article: 2010 Nebraska State Legislature election

Nebraska is the only U.S. state with a unicameral legislature; half of the seats of the Nebraska Legislature were up for election. Nebraska is also unique in that its legislature is officially non-partisan and holds non-partisan elections, although the Democratic and Republican parties each endorse legislative candidates. Republicans maintained control.

Nebraska Legislature

Party		Before	After	Change
	Republican	30	32	2
	Democratic	19	17	2
Total		49	49

Nevada

Main articles: 2010 Nevada State Senate election and 2010 Nevada Assembly election

All of the seats of the Nevada House of Representatives and half of the Nevada Senate were up for election. Democrats maintained control of both state legislative chambers.

Nevada Senate

Party		Before	After	Change
	Democratic	12	11	1
	Republican	9	10	1
Total		21	21

Nevada Assembly

Party		Before	After	Change
	Democratic	28	26	2
	Republican	14	16	2
Total		42	42

New Hampshire

Main articles: 2010 New Hampshire Senate election and 2010 New Hampshire House of Representatives election

All of the seats of the New Hampshire House of Representatives and the New Hampshire Senate were up for election. Republicans won control of both legislative chambers.

New Hampshire Senate

Party		Before	After	Change
	Republican	10	19	9
	Democratic	14	5	9
Total		24	24

New Hampshire House of Representatives

Party		Before	After	Change
	Republican	176	298	122
	Democratic	224	102	122
Total		400	400

New Mexico

Main article: 2010 New Mexico House of Representatives election

All of the seats of the New Mexico House of Representatives. Democrats maintained control of the chamber.

New Mexico House of Representatives

Party		Before	After	Change
	Democratic	45	36	9
	Republican	25	34	9
Total		70	70

New York

Main articles: 2010 New York State Senate election and 2010 New York State Assembly election

All of the seats of the New York Legislature were up for election. Republicans won control of the Senate, and Democrats maintained control of the Assembly.

New York State Senate

Party		Before	After	Change
	Republican	30	32	2
	Democratic	32	30	2
Total		62	62

New York State Assembly

Party		Before	After	Change
	Democratic	107	99	8
	Republican	41	50	9
	Independence	1	1
	Working Families	1	0	1
Total		150	150

North Carolina

Main articles: 2010 North Carolina Senate election and 2010 North Carolina House of Representatives election

All of the seats of the North Carolina House of Representatives and half of the North Carolina Senate were up for election. Republicans made massive gains, flipping control of both state legislative chambers, winning them both simultaneously for the first time in over a century. ^[10]

North Carolina Senate

Party		Before	After	Change
	Republican	20	31	11
	Democratic	30	19	11
Total		50	50

North Carolina House of Representatives

Party		Before	After	Change
	Republican	52	67	15
	Independent	0	1	1
	Democratic	68	52	16
Total		120	120

North Dakota

Main articles: 2010 North Dakota Senate election and 2010 North Dakota House of Representatives election

All of the seats of the North Dakota House of Representatives and half of the North Dakota Senate were up for election. Republicans maintained control of both state legislative chambers.

North Dakota Senate

Party		Before	After	Change
	Republican	26	35	9
	Democratic-NPL	21	12	9
Total		47	47

North Dakota House of Representatives

Party		Before	After	Change
	Republican	58	69	11
	Democratic-NPL	36	25	11
Total		94	94

Ohio

Main articles: 2010 Ohio Senate election and 2010 Ohio House of Representatives election

All of the seats of the Ohio House of Representatives and half of the Ohio Senate were up for election. Republicans won control of the House of Representatives and maintained control of the Senate.

Ohio Senate

Party		Before	After	Change
	Republican	21	23	2
	Democratic	12	10	2
Total		33	33

Ohio House of Representatives

Party		Before	After	Change
	Republican	46	59	13
	Democratic	53	40	13
Total		99	99

Oklahoma

Main articles: 2010 Oklahoma Senate election and 2010 Oklahoma House of Representatives election

All of the seats of the Oklahoma House of Representatives and half of the Oklahoma Senate were up for election. Republicans maintained control of both state legislative chambers.

Oklahoma Senate

Party		Before	After	Change
	Republican	26	32	6
	Democratic	22	16	6
Total		48	48

Oklahoma House of Representatives

Party		Before	After	Change
	Republican	62	70	8
	Democratic	39	31	8
Total		101	101

Oregon

Main articles: 2010 Oregon State Senate election and 2010 Oregon House of Representatives election

All of the seats of the Oregon House of Representatives and half of the Oregon Senate were up for election. Democrats maintained control of the Senate, and the House of Representatives became tied.

Oregon State Senate

Party		Before	After	Change
	Democratic	18	16	2
	Republican	12	14	2
Total		30	30

Oregon House of Representatives

Party		Before	After	Change
	Democratic	36	30	6
	Republican	24	30	6
Total		60	60

Pennsylvania

Main articles: 2010 Pennsylvania Senate election and 2010 Pennsylvania House of Representatives election

All of the seats of the Pennsylvania House of Representatives and half of the Pennsylvania Senate were up for election. Republicans maintained control of the Senate and won control of the House of Representatives.

Pennsylvania State Senate

Party		Before	After	Change
	Republican	30	30
	Democratic	20	20
Total		50	50

Pennsylvania House of Representatives

Party		Before	After	Change
	Republican	99	112	13
	Democratic	104	91	13
Total		203	203

Rhode Island

Main articles: 2010 Rhode Island Senate election and 2010 Rhode Island House of Representatives election

All of the seats of the Rhode Island Legislature were up for election. Democrats maintained control of both state legislative chambers.

Rhode Island Senate

Party		Before	After	Change
	Democratic	33	29	4
	Republican	4	8	4
	Independent	1	1
Total		38	38

Rhode Island House of Representatives

Party		Before	After	Change
	Democratic	69	65	4
	Republican	6	10	4
Total		75	75

South Carolina

Main article: 2010 South Carolina House of Representatives election

All of the seats of the South Carolina House of Representatives were up for election. Republicans maintained control of both state legislative chambers.

South Carolina House of Representatives

Party		Before	After	Change
	Republican	73	76	3
	Democratic	51	48	3
Total		124	124

South Dakota

Main articles: 2010 South Dakota Senate election and 2010 South Dakota House of Representatives election

All of the seats of the South Dakota Legislature were up for election. Republicans maintained control of both state legislative chambers.

South Dakota Senate

Party		Before	After	Change
	Republican	21	30	9
	Democratic	14	5	9
Total		35	35

South Dakota House of Representatives

Party		Before	After	Change
	Republican	46	50	4
	Democratic	24	19	5
	Independent	0	1	1
Total		70	70

Tennessee

Main articles: 2010 Tennessee Senate election and 2010 Tennessee House of Representatives election

All of the seats of the Tennessee House of Representatives and half of the Tennessee Senate were up for election. After having narrowly won control of both chambers in the 2008 election, Republicans greatly expanded their majority in the House and picked up one seat in the Senate. ^[10]

Tennessee Senate

Party		Before	After	Change
	Republican	19	20	1
	Democratic	14	13	1
Total		33	33

Tennessee House of Representatives

Party		Before	After	Change
	Republican	50	64	14
	Democratic	48	34	14
	Independent Republican	1	1
Total		99	99

Texas

Main articles: 2010 Texas Senate election and 2010 Texas House of Representatives election

All of the seats of the Texas House of Representatives and half of the Texas Senate were up for election. After having nearly lost control of the Texas House in 2008, Republicans routed the Democrats, flipping 22 seats. Republicans erased all of the gains Democrats had made in 2006 and 2008, and they defeated almost every Democrat representing a rural, Republican-leaning district. ^[36]

Texas Senate

Party		Before	After	Change
	Republican	19	19
	Democratic	12	12
Total		31	31

Texas House of Representatives

Party		Before	After	Change
	Republican	77	99	22
	Democratic	73	51	22
Total		150	150

Utah

Main articles: 2010 Utah Senate election and 2010 Utah House of Representatives election

All of the seats of the Utah House of Representatives and half of the Utah Senate were up for election. Republicans maintained control of both state legislative chambers.

Utah State Senate

Party		Before	After	Change
	Republican	21	22	1
	Democratic	8	7	1
Total		29	29

Utah House of Representatives

Party		Before	After	Change
	Republican	53	58	5
	Democratic	22	17	5
Total		75	75

Vermont

Main articles: 2010 Vermont Senate election and 2010 Vermont House of Representatives election

All of the seats of the Vermont Legislature were up for election. Democrats maintained control of both state legislative chambers.

Vermont Senate

Party		Before	After	Change
	Democratic	23	21	2
	Republican	7	8	1
	Progressive	0	1	1
Total		30	30

Vermont House of Representatives

Party		Before	After	Change
	Democratic	94	94
	Republican	48	48
	Progressive	5	5
	Independent	3	3
Total		150	150

Washington

Main articles: 2010 Washington State Senate election and 2010 Washington House of Representatives election

All of the seats of the Washington House of Representatives and half of the Washington Senate were up for election. Democrats maintained control of both legislative chambers.

Washington State Senate

Party		Before	After	Change
	Democratic	31	27	4
	Republican	18	22	4
Total		49	49

Washington House of Representatives

Party		Before	After	Change
	Democratic	61	56	5
	Republican	37	42	5
Total		98	98

West Virginia

Main articles: 2010 West Virginia Senate election and 2010 West Virginia House of Delegates election

All of the seats of the West Virginia House of Delegates and half of the West Virginia Senate were up for election. Democrats maintained control of both state legislative chambers.

West Virginia Senate

Party		Before	After	Change
	Democratic	26	28	2
	Republican	8	6	2
Total		34	34

West Virginia House of Delegates

Party		Before	After	Change
	Democratic	71	65	6
	Republican	29	35	6
Total		100	100

Wisconsin

Main articles: 2010 Wisconsin Senate election and 2010 Wisconsin State Assembly election

All of the seats of the Wisconsin Assembly and half of the Wisconsin Senate were up for election. Republicans flipped control of both state legislative chambers, as well as the governorship, winning complete control of state government for the first time since 1998. ^[10]

Wisconsin Senate

Party		Before	After	Change
	Republican	15	19	4
	Democratic	18	14	4
Total		33	33

Wisconsin State Assembly

Party		Before	After	Change
	Republican	46	60	13
	Democratic	51	38	12
	Independent	2	1	1
Total		99	99

Wyoming

Main articles: 2010 Wyoming Senate election and 2010 Wyoming House of Representatives election

All of the seats of the Wyoming House of Representatives and half of the Wyoming Senate were up for election. Republicans maintained control of both state legislative chambers.

Wyoming Senate

Party		Before	After	Change
	Republican	23	26	3
	Democratic	7	4	3
Total		30	30

Wyoming House of Representatives

Party		Before	After	Change
	Republican	41	50	9
	Democratic	19	10	9
Total		60	60

Territorial and federal district summaries

American Samoa

All of the seats of the American Samoa Senate and the American Samoa House of Representatives were up for election. Members of the Senate serve four-year terms, while members of the House of Representatives serve two-year terms. Gubernatorial and legislative elections are conducted on a nonpartisan basis in American Samoa.

Guam

Guam Legislature

Party		Before	After	Change
	Democratic	9	9
	Republican	6	6
Total		15	15

U.S. Virgin Islands

Virgin Islands Legislature

Party		Before	After	Change
	Democratic	10	10
	Independent	5	5
Total		15	15

Washington, D.C.

District of Columbia Council

Party		Before	After	Change
	Democratic	11	11
	Independent	2	2
Total		13	13

Notes

1. The Alaska Senate was controlled by a coalition of Democrats and Republicans. The minority caucus consists of Republicans who were not part of the majority coalition.
2. The Oregon House of Representatives was tied in the 2011-2013 session. This is not included in the total.
3. The upper houses of Arkansas, Delaware, Florida, Hawaii, Illinois, Minnesota, New Jersey, and Texas use a 2-4-4 term length system.
4. These figures represent the seats of Nebraska's unicameral legislature.
5. Counts seats that were vacant prior to the election towards the party that last held them
6. Counts seats in the officially nonpartisan Nebraska legislature towards the party that endorsed each candidate
7. Counts seats that were vacant prior to the election towards the party that last held them
8. Prior to the 2010 election, the 100 seats in the Montana House of Representatives were evenly split between Democrats and Republicans, but the Democratic Party controlled the chamber by virtue of holding the governor's office.
9. The Democratic Party controlled the chamber by virtue of holding the governor's office.

References

1. "2018 Legislative Races by State and Legislative Chamber". National Conference of State Legislatures.
2. Jacobson, Louis (July 7, 2010). "2010 State Legislatures: Democrats Buckle Up for Wild Ride". Governing. Archived from the original on July 28, 2010. Retrieved July 15, 2024.
3. Jacobson, Louis (September 29, 2010). "2010 State Legislatures: Forecast Worsens for Democrats". Governing. Archived from the original on December 5, 2010. Retrieved July 15, 2024.
4. Jacobson, Louis (November 1, 2010). "Update: 2010 State Legislatures: A Challenging Environment for Democrats". Governing. Archived from the original on December 5, 2010. Retrieved July 14, 2024.
5. "State Partisan Composition". www.ncsl.org. Retrieved December 20, 2024.
6. Storey, Tim. "GOP Makes Historic State Legislative Gains in 2010". Rasmussen Reports. Rasmussen Report, LLC. Retrieved July 29, 2014.
7. Balz, Dan (November 14, 2010). "The Republican takeover in the states". Washingtonpost.com. Retrieved June 4, 2013.
8. Cole, Michelle (January 11, 2011). "Oregon House makes history by electing two co-speakers". The Oregonian. Retrieved July 29, 2014.
9. "Devastation: GOP Picks Up 680 State Leg. Seats". November 4, 2010. Archived from the original on October 28, 2012. Retrieved November 4, 2010.
10. Taylor, Jessica (November 16, 2010). "Democrats' losses ran wide, deep". Politico. Retrieved February 29, 2024.
11. Daigneau, Elizabeth (November 3, 2010). "2010 State Legislatures: GOP Chalks Up Historic Gains". Governing. Retrieved February 29, 2024.
12. Greenfield, Jeff (May 12, 2021). "We're still feeling the aftershocks of the 2010 midterm elections". The Washington Post. Archived from the original on June 15, 2021. Retrieved February 3, 2025.
13. Sherer, Jennifer; Gould, Elise (February 13, 2024). "Data show anti-union ‘right-to-work’ laws damage state economies: As Michigan's repeal takes effect, New Hampshire should continue to reject ‘right-to-work’ legislation". Economic Policy Institute. Retrieved February 3, 2025.
14. Condon, Stephanie (March 11, 2011). "Wisconsin Gov. Scott Walker signs anti-union bill – but Democrats say they're the political victors". CBS News. Retrieved March 12, 2011.
15. Mary Spicuzza (March 31, 2012). "Recall elections ordered for Walker, Kleefisch, 4 GOP senators". Wisconsin State Journal. Archived from the original on August 18, 2017. Retrieved October 4, 2017.
16. "Ohio Voters Overwhelmingly Reject Issue Two - :: Cincinnati news story :: LOCAL 12 WKRC-TV in Cincinnati". www.local12.com. Archived from the original on November 11, 2011. Retrieved June 6, 2022.
17. Memoli, Michael A. (November 3, 2010). "State legislative gains give Republicans unprecedented clout to remake districts - Los Angeles Times". Articles.latimes.com. Retrieved June 4, 2013.
18. Cook, Charlie (August 4, 2014). "The Lessons of the 2010 Midterm Elections". Government Executive. Retrieved February 3, 2025.
19. Daley, David (2017). Ratf**ked: The True Story Behind the Secret Plan to Steal America's Democracy. New York, NY: Liveright Publishing Corporation. pp. xi–xxviii. ISBN   978-1-63149-321-8.
20. Kolbert, Elizabeth (June 20, 2016). "The G.O.P. Plan That Turned America Red". The New Yorker. ISSN   0028-792X . Retrieved February 3, 2025.
21. "National Overview". All About Redistricting. Retrieved December 6, 2024.
22. Wang, Sam (February 2, 2013). "The Great Gerrymander of 2012". The New York Times. Retrieved May 29, 2013.
23. Martin, Jonathan (November 28, 2010). "Democratic South finally falls". POLITICO. Retrieved February 3, 2025.
24. Rogers, Alex (December 7, 2014). "Landrieu's Loss a Harsh Milestone for Southern Democrats". TIME. Retrieved February 3, 2025.
25. Montgomery, David (November 5, 2018). "How Density Shaped Congressional Politics Over the Last Decade". Bloomberg.com. Retrieved February 3, 2025.
26. Phillips, Amber (November 8, 2016). "Democrats are now basically extinct in the South". The Washington Post. Archived from the original on March 29, 2023. Retrieved February 3, 2025.
27. "Unions notch win: Deep-red Missouri rejects right-to-work law - CNNPolitics". Archived from the original on August 10, 2018. Retrieved January 30, 2019.
28. Ingraham, Christopher (November 13, 2018). "In at least three states, including Pa., Republicans won House while losing popular vote". The Philadelphia Inquirer . Philadelphia, U.S.A. The Washington Post . Retrieved November 19, 2018.
29. Andrews, Joey (August 28, 2023). "In Michigan, Progressives Are Finally Rolling Back Right-Wing Anti-Labor Laws". jacobin.com. Retrieved February 4, 2025.
30. Suddes, Thomas (November 10, 2024). "A harsh new reality for Ohio Democrats after Tuesday's losses, earlier miscues: Thomas Suddes". cleveland. Retrieved February 4, 2025.
31. Elving, Ron (May 21, 2022). "Trump's MAGA is marching down a trail blazed by the Tea Party". NPR. Retrieved February 4, 2025.
32. Freelander, Adam (January 11, 2024). "How Michigan explains American politics". Vox. Retrieved February 4, 2025.
33. Heath, Brad; Thorson, Mitchell; Sergent, Jim. "How Trump changed the Obama landscape". USA TODAY. Retrieved February 4, 2025.
34. "Republicans claim majority in Alabama House and Senate for 1st time in 136 years". al. November 3, 2010. Retrieved February 10, 2025.
35. Johnson, Bob (November 22, 2010). "Four lawmakers jump from Democratic Party to GOP". The Tuscaloosa News. Retrieved February 10, 2025.
36. Grissom, Brandi; et al. (November 3, 2010). "Red November". The Texas Tribune. Retrieved May 7, 2023.